136. Lastly I spoke with the spirits who were from that earth about various things on our earth, especially about there being sciences here which are not elsewhere, as astronomy, geometry, mechanics, physics, chemistry, medicine, optics, philosophy: and also arts, which are not known elsewhere, as those of ship- building, of casting metals, of writing upon paper, and of printing what is written by types, and so of communicating it to others on the earth, and also of preserving it for posterity for thousands of years; as I told them had been done with the Word which is from the Lord; and therefore there is a permanent Revelation on our earth.